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HP kp721av Benutzerhandbuch

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Technical Reference Guide
www.hp.com
7-3
Power and Signal Distribution
NOTES:
Total continuous power should not exceed 240 watts. Total surge power (<10 seconds w/duty cycle < 5 %) should not exceed 
260 watts.
[1] The minimum current loading figures apply to a PS On start up only.
Figure 7-3 shows the power supply cabling for the SFF system.
All + and - values are VDC.
RTN = Return (signal ground)
sns = sense
GND = Power ground
RS = Remote sense
FC = Fan command
FO = Fan off
FSpd = Fan speed
FS = Fan Sink
POK = Power OK (power good)
VccP = +12 for CPU
nc = not connected
Ftach = Fan speed
Fcmd = Fan command
[1] This row represents pins 13–24 of connector P1
Figure 7-3. SFF Power Cable Diagram
Table 7-2.
SFF 240-Watt Power Supply Unit Specifications
Range/
Tolerance
Min. 
Current
Loading [1]
Max.
Current
Surge 
Current
Max.
Ripple
Input Line Voltage
90–264 VAC
--
--
--
--
Line Frequency
47–63 Hz
--
--
--
--
Input (AC) Current
--
--
5.0 A
--
--
+3.3 VDC Output
+ 4%
0.1 A
15.0 A
15.0 A
50 mV
+5.08 VDC Output
+ 3.3 %
0.3 A
17.0 A
17.0 A
50 mV
+5.08 AUX Output
+ 3.3 %
0.0 A
3.0 A
3.5 A
50 mV
+12 VDC Output
+ 5 %
0.1 A
7.5 A
9.0 A
120 mV
+12 VDC Output (Vcpu)
+ 5 %
0.1 A
11.0 A
14.5 A
120 mv
--12 VDC Output
+ 10 %
0.0 A
0.15 A
0.15 A
200 mV
Conn
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 
10
Pin 
11
Pin 
12
P1
+3.3
+3.3
RTN
+5
RTN
+5
RTN
POK
5AUX
+12
+12
3.3
P1 [1]
+3.3
-12
RTN
PS On
RTN
RTN
RTN
PS Det
+5
+5
+5
RTN
P2
+5
RTN
RTN
+12
P3
RTN
RTN
VccP
 VccP
P4, 5, 
7
+3.3
RTN
+5
RTN
+12
P11
GND
nc
Ftach
Fcmd
Power Supply
Unit
P1
P3
P2
P4
P5
P7
P1
13
1
12
P4, P5, P7
24
1
2
3
4
5
1
2
3
4
P2
P3
1
2
3
4
P11
1
2
3
4
P11